WO2012076251A1 - Installation de coulée continue servant à couler une barre métallique - Google Patents

Installation de coulée continue servant à couler une barre métallique Download PDF

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Publication number
WO2012076251A1
WO2012076251A1 PCT/EP2011/069073 EP2011069073W WO2012076251A1 WO 2012076251 A1 WO2012076251 A1 WO 2012076251A1 EP 2011069073 W EP2011069073 W EP 2011069073W WO 2012076251 A1 WO2012076251 A1 WO 2012076251A1
Authority
WO
WIPO (PCT)
Prior art keywords
strand
strand guide
coupling point
guide segment
segment
Prior art date
Application number
PCT/EP2011/069073
Other languages
German (de)
English (en)
Inventor
Martin Becker
Axel Stavenow
Tim Kleier
Original Assignee
Sms Siemag Ag
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Sms Siemag Ag filed Critical Sms Siemag Ag
Priority to EP11776442.3A priority Critical patent/EP2648865B1/fr
Publication of WO2012076251A1 publication Critical patent/WO2012076251A1/fr

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
    • B22D11/12—Accessories for subsequent treating or working cast stock in situ
    • B22D11/1206—Accessories for subsequent treating or working cast stock in situ for plastic shaping of strands
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
    • B22D11/12—Accessories for subsequent treating or working cast stock in situ
    • B22D11/128—Accessories for subsequent treating or working cast stock in situ for removing
    • B22D11/1281—Vertical removing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
    • B22D11/14—Plants for continuous casting
    • B22D11/141—Plants for continuous casting for vertical casting
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
    • B22D11/16—Controlling or regulating processes or operations
    • B22D11/22—Controlling or regulating processes or operations for cooling cast stock or mould
    • B22D11/225—Controlling or regulating processes or operations for cooling cast stock or mould for secondary cooling

Definitions

  • the invention relates to a continuous casting plant for casting a metal strand, with a mold for forming the metal strand and a strand guide with at least a first strand guide segment, which is arranged downstream of the mold in the casting direction, with a strand input side and a strand output side.
  • the first strand guide segment has a pair of roller carriers disposed oppositely within the first strand guide segment and each having a number of support rollers extending over a support region for supporting and guiding the metal strand exiting the mold.
  • EP 0 450 391 B1 describes a device for supporting a metal strand, in particular for soft reduction in a pre-strip casting plant, wherein mirror-image opposing roll supports are provided below the continuous casting mold on both sides of the cast strand.
  • the roller carriers are divided into a plurality of rollers carrying segments which are so articulated coupled to each other, that each segment can be adjusted and adjusted for at any angle to the cast strand.
  • a continuous casting plant for casting a metal strand with billet or billet cross section is known, with a usable in a Kokillentragrahmen, exchangeable and oscillating mold for Forming the metal strand and a strand guide subsequent to the mold for supporting and guiding the metal strand.
  • the first of the mold immediately following strand guide segment is releasably attached to the first segment frame at substantially vertical support surfaces and independently of the subsequent strand guide segments from the continuous casting and off and installable.
  • EP 1 370 380 B1 describes the strand guide of a continuous casting plant as well as a positioning process for its roll segments.
  • the strand guide comprises at least two segments, which are usually formed as roller segments with one strand input side and one strand output side and a pair of roller carriers with support rollers, wherein the roller carriers can be adjusted by means of hydraulic adjusting units.
  • a mechanical connection is present between adjacent segments, so that, when a pair of cylinders is arranged on the strand input side of a segment, its setting movement takes place both at this side and at the strand exit side of an associated precursor segment.
  • the adjusting movement takes place both on this side and at the same time on the strand input side of an associated following segment.
  • the object of the invention is to simplify the setting of the format thickness of the cast strand within a continuous casting plant for casting metal strands, so that a flexible and rapid adjustment of different formats is ensured in successive casting processes. At the same time, the operational safety is to be improved and the costs reduced.
  • This object is achieved by the features of claim 1.
  • the claim 1 is characterized in that between the mold and the first strand guide segment, a first coupling point is arranged.
  • reaction forces in the present text means those forces which are exerted on the roller carriers of the strand guide segments transversely to the casting direction due to the hydrostatic pressure acting in the interior of the liquid metal strand.
  • the advantage of this arrangement according to the invention is the quick and easy connection of the mold to the first strand guide segment with simultaneous automatic adjustment of the format thickness in the first strand guide segment of the continuous casting over the first coupling point without the use of positive Onsgeregelter hydraulic cylinder in the first strand guide segment would be mandatory.
  • the coupling point advantageously a simple and secure mechanical connection between the mold and the first strand guide segment is created.
  • the coupling point has the advantage that the mold can be replaced independently of the first strand guide segment. This simplifies the assembly considerably.
  • the arrangement according to the invention provides that the first coupling point is arranged between the mold and the loose side of the first strand guide segment in order to unambiguously / firmly position the loose side of the first strand guide segment to the mold. Furthermore, the invention provides that an oscillating drive is arranged on the mold, which vibrates the mold in the casting direction.
  • the first coupling point is therefore designed so that a kokillen workede half of the first coupling point and connected to the mold on the first strand segment segment-side half of the first coupling point are also freely displaceable against each other in an engaged position in the direction of vibration.
  • the vibrations generated at the mold by the oscillation drive are prevented from being transmitted to the first strand guide segment.
  • the mutually displaceable kokillen workede and segment-side half also allow irregular forces occurring in the casting direction, which arise for example during the casting operation when filling the liquid casting metal, can be compensated by the coupling point.
  • the first coupling point is designed so stable that the reaction forces generated in the interior of the still liquid metal strand within the first strand guide segment are at least partially transferred to the mold via the first coupling point.
  • this eliminates additional fasteners, such. B. hydraulic cylinder, on the first strand guide segment for connecting its Losseite with its fixed side and for receiving the reaction forces in the first strand guide segment.
  • a change of the first strand guide segment is greatly simplified, because the disassembly and assembly of the hydraulic cylinder and its electronics is eliminated.
  • the invention provides that at least one of the mold associated connecting element is designed to be stable, that it is not only the resulting in the mold due to the prevailing ferrostatic pressure there reaction forces on the mold walls, but in addition also at least partially transmitted from the first strand guide segment reaction forces can absorb and absorb.
  • the connecting element can be arranged on the mold inlet side and / or the mold outlet side and / or between them. Since the loose side and fixed side of the mold are usually preassembled and firmly joined together by means of the connecting element, the at least one connecting element of the mold can advantageously also be used to take over at least part of the reaction forces from the first strand guide segment.
  • the invention further provides that the strand guide has a second strand guide segment, which in the casting direction of the first strand guiding subordinate segment and connected via a second coupling point m it with the first strand guide segment.
  • a half of the second coupling point connected to the first strand guide segment and a half of the second coupling point connected to the second strand guide segment are freely displaceable relative to one another in the casting direction.
  • Such a design of the second coupling point allows for easy insertion and coupling of the first segment to the second strand guide segment.
  • the assembly and disassembly of the strand guide segments carried by the insertion into the coupling point independently and are therefore much faster and easier to perform.
  • the invention provides that the second coupling point is designed so stable that the reaction forces can be transmitted within the first strand guide segment at least partially from the second coupling point to the second strand guide segment.
  • At least one third connecting element assigned to the second strand guiding segment for connecting the fixed side to the loose side of the second strand guiding segment is designed to be stable such that it is not only in the second strand guiding segment Reactive forces arising but also at least partially absorb and absorb the resulting from the first strand guide segment resulting and transmitted from the second coupling point on the second strand guide segment reaction forces.
  • the third connecting element can advantageously be arranged according to the space and force relationships on the input side and / or on the output side and / or in the central region of the second strand guide segment.
  • the reaction forces are distributed from the first strand guide segment to the first and the second coupling point and thus to the Kokil- le and the second strand guide segment. Due to this distribution of force connecting elements in the region of the first strand guide segment are basically unnecessary. As a result, the installation and removal of the first strand guide segment is significantly simplified. Regardless of this, it is provided according to an alternative embodiment feature that at least one second connection element is arranged on the input side and / or the output side and / or in the central region of the first strand guide segment, for connecting the fixed side to the loose side of the first strand guide segment.
  • the second connecting element is designed so stable that it can at least partially absorb and compensate for the reaction forces arising in the first strand guide segment.
  • the second connecting element leads to an increased load capacity of the first strand guide segment, when the reaction forces in the first strand guide segment can also be partially derived in addition to the mold and / or the second strand guide segment. At rather low maximum loads in the strand guide segment can at least one of the coupling points be constructively smaller and thus designed to be weaker.
  • the invention provides that the coupling points are articulated. Advantage over a rigid connection is the possibility of improved adaptation to the strand guide, especially in the bow area of the strand guide, and an improved distribution of force in the joint.
  • the coupling points are designed decoupled. This allows the strand guide segments to be separated quickly and easily.
  • the first coupling point and / or the second coupling point are formed as a sliding bearing.
  • the connection provides only one degree of freedom in the casting direction.
  • the coupling point is freely movable, so that the vibrations in the casting direction, for example caused by the oscillation drive on the mold, are compensated.
  • the decoupling of adjacent strand guide segments is simplified.
  • the invention provides that between the kokillen salen half of the first coupling point and the segment-side half of the first coupling point a sliding bearing or a roller bearing is arranged.
  • the wear characteristics and the friction behavior of the sliding bearing can be improved with the plain bearing or roller bearings.
  • the invention further provides that - when the first coupling point is in engagement - the jaw width of the strand input side of the first strand guide segment coincides with the jaw width of the output side of the mold and is aligned.
  • the format thickness of the mold is previously set outside the strand guiding device by suitable positioning of the halves of the coupling points. Through the coupling point, the format thickness is automatically transferred from the mold to the first strand guide segment during coupling. An otherwise very time-consuming adjustment of the mouth widths in the transition region from the mold to the first strand guide segment is omitted here.
  • Figure 1 shows a continuous casting, comprising a mold, a first strand guide segment, a second strand guide segment, wherein the first strand guide segment is connected via a respective coupling point with the mold and the second strand guide segment;
  • Figure 2 shows a continuous casting plant as shown in Figure 1, in each case a connecting element is arranged on the input side and the output side of the first strand guide segment;
  • FIG. 3 shows a continuous casting plant, as described above, in which a connecting element is arranged only on the input side of the first strand guiding segment;
  • Figure 4 shows a continuous casting plant as described above, in which only at the strand exit side of the first strand guide segment, a connecting element is arranged;
  • Figure 5a exemplary embodiment of the coupling point as a sliding bearing with a
  • the mold 20 consists of a fixed side 22 and a loose side 21, with at least one first connecting element 55, for connecting the fixed side 22 with the lot side 21.
  • Connecting elements 55 of this type are usually referred to in this application as clamping units. They are used for cohesion of the individual components of the molds 20, in particular for cohesion of the two broad sides and for receiving reaction forces F.
  • the mold 20 is associated with an oscillating drive 70 which vibrates the mold 20 in the casting direction R, to adhere the forming To prevent strand shell on the inside of the mold 20.
  • the illustrated strand guide 30 comprises, downstream of the mold 20 in the casting direction R, a first strand guide segment 31 with a fixed side 35 and a loose side 36 and a first strand entrance side 38 and a first strand exit side 39.
  • the roller carriers 60, 61 each have in the casting direction a number of support rollers 37 extending over a support region for carrying and guiding the metal strand 10 emerging from the mold 20.
  • the first strand guide segment 31 is followed by at least one second strand guide segment 32 in the casting direction R.
  • the second strand guide segment 32 describes a second strand entrance side 38 'and a second strand exit side 39' and a third roller carrier 62 on the second lot side 36 'and a fourth roller carrier 63 on the second fixed side 35' of the second strand guide segment 32.
  • the two roller carriers 62, 63 are The fixed side 35 'of the second strand guide segment 32 is connected to the loose side 36' of the second strand guide segment 32 via two connecting elements 57, hereinafter also referred to as clamping units, connected to each other.
  • the arrangement of only one clamping unit (not shown in Figure 1) is also conceivable.
  • the clamping units 57 serve to receive the prevailing at least in the second strand guide segment 32 reaction forces, caused by the hydrostatic pressure in the still liquid metal strand 1 0.
  • the reaction forces act substantially perpendicular to the casting direction R on the roller carriers 60, 61, 62, 63 of the Strand guide segments 31, 32 and on the walls of the mold 20th
  • the clamping units 57 serve to receive the reaction forces transmitted from the first strand guide segment 31 via a second coupling point 41 to the second strand guide segment 32, wherein the second coupling point 41 in the region between the first strand exit side 39 of the first strand guide segment 31 and the second strand inlet side 38 '. of the second strand guide segment 32 is arranged.
  • the second strand guide segment 32 which is mounted in the strand guide of the continuous casting plant 100, is inserted into the strand guide 30, which is then inserted into the strand guide 30. set first strand guide segment 31 coupled via the second coupling point 41. Subsequently, the mold 20 is inserted above the first strand guide segment 31 in the strand guide 30 and coupled via the first coupling point 40 to the first strand guide segment 31.
  • the first and second coupling point 40, 41 which are each exemplified as sliding bearings, allow easy and fast coupling of the elements described above within a continuous casting 100.
  • the inventive first coupling point 41 allows the mold 20 and the first strand guide segment 31 individually in the strand guide 30 can be used. As a result, the respective trailer weight on a crane is considerably reduced when the continuous caster 1 00 is assembled.
  • the at least one kokillen workede half and at least one segment-side half of the first coupling point 40 and the at least one connected to the first strand guide segment half of the second coupling point 41 and the at least one connected to the second strand guide segment half of the second coupling point 41 are used in the Function, for example, a plug-in coupling or sliding coupling for quick and easy installation and connection of the components, as described above.
  • the respective halves of the coupling points 40, 41 consist of at least two form-fitting interlocking components or guide elements, which form the sliding bearing.
  • the at least one half of the first coupling point 40 describes a first guide element on the output side of the mold 20, which is for example web-shaped or cylindrical.
  • the second half of the first coupling point 40 describes a second guide element on the first strand input side 38 of the first strand guide segment 31, which is U-shaped, for example, for receiving the first guide segment, and which cooperates with the first guide element.
  • the second coupling point 41 may in principle be constructed in the same way as the first coupling point 40, and is usually arranged in the region between the first strand exit side 39 of the first strand guide segment 31 and the strand input side 38 'of the second strand guide segment 32.
  • a particular advantage of the coupling points 40, 41 according to the invention as sliding bearings is that the coupling points 40, 41 only have to absorb the reaction forces described above.
  • the oscillations in the casting direction R generated by the oscillation drive 70 on the mold 20 are compensated by the movement of the coupling points 40, 41, which are displaceable in the casting direction R, and are not compensated for by the co-operation. Kille 20 downstream at least two strand guide segments 31, 32 Ü transmitted.
  • FIG. 2 describes the same strand guide 30 as already described with reference to FIG. The only difference is that in the first strand guide segment 31, two second connecting elements 56 are arranged for connecting the fixed side 35 to the loose side 36 of the first strand guiding segment 31.
  • a second connecting element 56 in the region of the strand input side 38 and the strand output side 39 of the first strand guide segment 31 is arranged in each case.
  • the connecting elements 56 which are also referred to as clamping units, designed as hydraulic, pneumatic or electro-mechanical components.
  • the second connecting elements in FIG. 2 absorb at least part of the reaction forces in the first strand guiding segment 31 and thus relieve the first and the second coupling point 41. These can therefore be compared to the training of FIG. 1 less stable and designed dam it cheaper.
  • the illustration in FIG. 3 differs from the illustration in FIG. 2 only in that only a second connecting element 56 is arranged on the first strand guide segment 31 in the region of the first strand entrance side 38 for connecting the first fixed side 35 to the first lot side 36 of the first strand guide segment 31.
  • the first coupling point 40 is relieved while the second coupling point 41 has to transfer part of the reaction forces from the first strand guiding segment 31 to the second strand guiding segment 32, similar to FIG. Therefore, the first coupling point 40 may be made weaker here than the second coupling point 41.
  • the advantages resulting from the optionally attached additional clamping units 56 on the first strand guide segment 31 according to the illustrations in FIGS. 2, 3 and 4 are, on the one hand, the possibility of increasing the maximum load capacity of the first strand guide segment 31 by at least one additional Clamping unit 56 in addition to the stably formed coupling points 40, 41.
  • substantially more reaction forces can be accommodated within the first strand guide segment 31.
  • the coupling points 40, 41 are executed according to the dimensioning of the clamping units 56 weaker, since a part of the reaction forces of the additional Klem units 56 are added, as described above.
  • the figure 5a describes in principle the formation of the coupling points 40, 41 as a sliding bearing with a sliding bearing with two guide elements which engage with each other and are guided against each other.
  • the illustrated shape of the two guide elements is outlined only as an example and may be different.
  • the second coupling point 41 may also differ from the construction of the first pelstelle 40 deviate.
  • the friction surfaces of the mutually displaceably guided guide elements can be used as low-friction, replaceable slide rails 80, 80 ', for example, a temperature-resistant bearing bronze or a highly wear-resistant material such. B. Hardox, executed.
  • the friction surface at least on a guide element may, for example, be formed in the shape of a blade or in a spherical shape (not shown in FIG. 5a) in order to reduce friction within the slide bearing.
  • the additional use of a high-temperature resistant lubricant between the friction surfaces advantageously leads to a further reduction of the frictional forces and thus to a reduction in wear within the sliding bearing
  • FIG. 5b and 5c show alternative embodiments of the sliding bearing as a roller bearing.
  • bearing elements 81 such as balls or conical or cylindrical needles between the two guide elements of the coupling points 40, 41 are arranged.
  • FIG. 5 c describes the arrangement of at least one roller bearing 82 or a roller as the upper guide element of the coupling points 40, 41.
  • the roller can be formed with spherical surface.
  • Advantage of these arrangements as roller bearings are the much lower frictional resistance between the guide elements of the coupling points 40, 41 in comparison to a slide bearing.
  • positional displacements between the guide elements can also be compensated in the embodiment according to FIG. B. occur in the curve area of the strand guide.
  • the guide element can roll with the flat surface on the roller bearing or the roller of the second guide element and even assume a different angular position ⁇ . LIST OF REFERENCE NUMBERS

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Continuous Casting (AREA)

Abstract

L'invention concerne une installation de coulée continue (100) servant à couler une barre métallique (10). L'agencement de l'installation de coulée continue (100) définit une lingotière (20) servant à former la barre métallique (10) et un dispositif de guidage de barre (30) comportant au moins un premier segment de guidage de barre (31) agencé en aval de la lingotière (20) dans le sens de la coulée (R). Le segment de guidage de barre (31) doté d'un côté d'entrée de la barre (38) et d'un côté de sortie de la barre (39) comporte deux supports de rouleaux (60, 61) qui sont agencés de manière à se faire face à l'intérieur du premier segment de guidage de barre (31) pour guider la barre métallique (10) sortant de la lingotière (20). L'invention vise à permettre un réglage flexible et rapide de l'épaisseur de format de la barre métallique (10). A cet effet, un premier point d'accouplement (40) est agencé entre la lingotière (20) et le premier segment de guidage de barre (31).
PCT/EP2011/069073 2010-12-10 2011-10-31 Installation de coulée continue servant à couler une barre métallique WO2012076251A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP11776442.3A EP2648865B1 (fr) 2010-12-10 2011-10-31 Installation de coulée continue servant à couler une barre métallique

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102010062863.8 2010-12-10
DE201010062863 DE102010062863A1 (de) 2010-12-10 2010-12-10 Stranggießanlage zum Gießen eines Metallstranges

Publications (1)

Publication Number Publication Date
WO2012076251A1 true WO2012076251A1 (fr) 2012-06-14

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PCT/EP2011/069073 WO2012076251A1 (fr) 2010-12-10 2011-10-31 Installation de coulée continue servant à couler une barre métallique

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Country Link
EP (1) EP2648865B1 (fr)
DE (1) DE102010062863A1 (fr)
WO (1) WO2012076251A1 (fr)

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3718177A (en) * 1971-08-27 1973-02-27 Steel Corp Removable mold assembly with quick change mechanism
DE4436328A1 (de) * 1993-10-14 1995-04-20 Voest Alpine Ind Anlagen Verfahren und Anlage zum Stranggießen
EP0450391B1 (fr) 1990-04-05 1995-05-24 Sms Schloemann-Siemag Aktiengesellschaft Dispositif pour le guidage d'une billette métallique en coulée continue, notamment pour la réduction légère en coulée de bande
WO1997037796A1 (fr) * 1996-04-04 1997-10-16 Ag Industries, Inc. Ensemble moule et guide de pied pour coulee continue
WO1997044150A1 (fr) * 1996-05-20 1997-11-27 Voest-Alpine Industrieanlagenbau Gmbh Machine a coulee continue
DE10106252A1 (de) * 2001-02-10 2002-08-14 Sms Demag Ag Strangführung einer Stranggiessanlage sowie Anstellverfahren für deren Rollensegmente
WO2009141210A1 (fr) 2008-05-23 2009-11-26 Siemens Vai Metals Technologies Gmbh & Co Installation de coulée continue pour la coulée d’une barre métallique présentant une section transversale de billette ou de blooms

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3718177A (en) * 1971-08-27 1973-02-27 Steel Corp Removable mold assembly with quick change mechanism
EP0450391B1 (fr) 1990-04-05 1995-05-24 Sms Schloemann-Siemag Aktiengesellschaft Dispositif pour le guidage d'une billette métallique en coulée continue, notamment pour la réduction légère en coulée de bande
DE4436328A1 (de) * 1993-10-14 1995-04-20 Voest Alpine Ind Anlagen Verfahren und Anlage zum Stranggießen
WO1997037796A1 (fr) * 1996-04-04 1997-10-16 Ag Industries, Inc. Ensemble moule et guide de pied pour coulee continue
WO1997044150A1 (fr) * 1996-05-20 1997-11-27 Voest-Alpine Industrieanlagenbau Gmbh Machine a coulee continue
DE10106252A1 (de) * 2001-02-10 2002-08-14 Sms Demag Ag Strangführung einer Stranggiessanlage sowie Anstellverfahren für deren Rollensegmente
EP1370380B1 (fr) 2001-02-10 2007-02-28 SMS Demag Aktiengesellschaft Guide de barre de coulee d'installation de coulee continue et procede de reglage pour ses segments de rouleaux
WO2009141210A1 (fr) 2008-05-23 2009-11-26 Siemens Vai Metals Technologies Gmbh & Co Installation de coulée continue pour la coulée d’une barre métallique présentant une section transversale de billette ou de blooms

Also Published As

Publication number Publication date
DE102010062863A1 (de) 2012-06-21
EP2648865A1 (fr) 2013-10-16
EP2648865B1 (fr) 2015-03-04

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